Empiricism and the Analytic-SyntheticDistinction (*) , Universitetsforlaget, Oslo 1972, 93 pp.

Explanation and Understanding in the History of Art (*) , Research Report No. 43, Department of Philosophy, University of Bergen 1978. Internet ed. 2007, 119 pp.

Wittgenstein – Aesthetics and Transcendental Philosophy. Ästhetik undtranszendentale Philosophie, eds. K. S. Johannessen & T. Nordenstam, Hölder-Pichler-Tempski, Vienna 1981, 193 pp.

Research and Development in the Sudan (*), ed. T. Nordenstam, Khartoum University Press, Khartoum 1985, 300 pp.

Culture and Value. Philosophy and the Cultural Sciences / Culture and Value. Philosophie und die Kulturwissenschaften, Papers of the 18^th International Wittgenstein Symposium, eds. Kjell S. Johannessen & Tore Nordenstam, The Austrian Ludwig Wittgenstein Society, Kirchberg am Wechsel 1995, 795 pp. -- PDF-files: Section 1 (pp. 1-144) (*) ; Section 2 (pp. 145-299) (*) ; Section 3 (pp. 300-450) (*) ; Section 4 (pp. 451-597) (*) ; Section 5 (pp. 599-748) (*) ; Special Workshop (pp. 749-795) (*) .

“Descriptive Ethics in the Sudan: an Example” (*) , Sudan Notes and Records, 48, 1967, pp. 90-98.

“Philosophy of Science in Norway” (*), Journal of General Philosophy of Science, Vol. 4, No. 1, 1973, pp. 147-164. (Co-author: Hans Skjervheim.)

The Ethics of Deterrence. A Study in the Philosophy of Punishment (*) , Research Report No. 28, Department of Philosophy, University of Bergen 1974. Internet edition 2007, 41 pp.

“Explanation and Understanding in the History of Art” (*) , in Wittgenstein and his Impact on Contemporary Thought / Wittgenstein und sein Einfluss auf die gegenwärtige Philosophie, Vienna 1978, pp. 465-467.

”Research, Ethics and Development“ (*) , Journal of General Philosophy of Science, Vol. 10, No. 1, 1979, pp. 54-66. (Co-author: Håkan Törnebohm.)

“Ethical Competence and Development” (*) , in J. Bärmark, ed., Perspectives in Meta-Science, Göteborg 1979, pp. 147-156.

"Conditions for Change in Working Life. The Paas Project Group" (*) , in Åke Sandberg, ed., Computers Dividing Man and Work,  Arbetslivscentrum, Stockholm  1979, pp. 131-137. (Co-author. The other members of the project grop were Gunnar Fredlund, Peter Gullers, Bo Göranzon, Torsten Landquist, Kalle Mäkilä, Anna Sjödahl, Lars Starck, Per Svensson, Tomas Tempte and Göran Öijer.)

Review of E. H. Gombrich, Kunsthistorie og samfundsvidenskab (*) , Journal of Aesthetics and Art Criticism, 37:3, Spring 1979, p. 360.

“Aesthetic Competence” (*) , in L. Aagaard-Mogensen & G. Hermeren, eds., Contemporary Aesthetics in Scandinavia, Lund 1980, pp. 99-109.

”On the Logic of Creative Processes” (*) , in Physis – Techne – Poiesis. The Creativity and the Human World. Proceedings of the 9^th International Congress of Aesthetics, Vol. II, Beograd 1980, pp. 265-268.

”Tools and Practices in Systems Development”(*) , in Bo Sundin, ed., Is the Computer a Tool?, Stockholm 1980, pp. 56-63.

Review of Evert Wedung, Det rationella politiska samtalet (The Rational Political Dialogue) (*) , in Economic and Industrial Democracy. An International Journal, Vol. 1, No. 4, 1980, pp. 590-593.

”Intention in Art“ (*) , in K. S. Johannessen & T. Nordenstam, eds., Wittgenstein – Aesthetics and Transcendental Philosophy. Wittgenstein – Ästhetik und die transzendentale Philosophie, Hölder – Pichler – Tempski, Vienna 1981, pp. 127-135.

“Traditional Ideology and Ethics among the Southern Luo” (*) , review-article on A.B.C. Ocholla-Ayayo, Traditional Ideology and Ethics among the Southern Luo, in Thought and Practice, Vol. 4, No. 2, Nairobi 1982, pp. 91-99.

Job Design and Automation in Sweden, by Bo Göranzon et al., Center for Working Life, Stockholm 1982, 146 pp. (Co-author, chapters 8 - 9.)

“From ‘Is’ to ‘Ought’ – Deduction or Articulation?” (*) , in H. Høybraaten & I. Gullvåg, eds., Essays in Pragmatic Philosophy, Oslo 1985, pp. 91-102; also in R. Fjelland et al.., eds., Philosophy Beyond Borders. An Anthology of Norwegian Philosophy, Bergen 1997, pp. 228-237.

“Conceptual Competence and the Nature of Man” (*) , in G. Skirbekk, ed., Praxeology, Bergen – Oslo – Troms¸ 1983, pp. 81-88.

"Creativity and Place" (*) , in A. Buttimer, ed., Creativity and Context, Lund 1983, pp. 77-79.

“The Essence of Art – Wittgenstein vs. Gadamer” (*) , in R. Haller, ed., Aesthetics / Ästhetik, Vienna 1984, pp. 23-28.

“Technocratic and Humanistic Conceptions of Development” (*) , in T. Nordenstam, ed., Research and Development in the Sudan, Khartoum 1985, pp. 5-29. (Also published as Research Report No. 51, Arbetslivscentrum. The Swedish Center for Working Life, Stockholm 1985, 37 pp.)

Preface and Introductions to the nine chapters in T. Nordenstam, ed., Research and Development in the Sudan (*) , Khartoum 1985.

“Suffering Art (Comment On Danto)” (*) , “Ontologizing Art (Comment on Damnjanovic)” (*) , and  “Anchoring Art (Comment on Sparshott)” (*) , in P. J. McCormick, ed., The Reasons of Art. L’Art a ses raisons, Ottawa 1985 pp. 23-25, 123-125, 134-137.

”Issues of a Philosophy of Development“ (*) , in S. Andersson, ed., Queries about Development, Report No. 146, Department of Theory of Science, University of Göteborg, 1985, pp. 25-30.

"Development and Research in the Sudan" (*) , Arab Studies in Scandinavia, No. 5, 1985, pp. 18-19.

“Moral Rules and Paradigms” (*) , Archivio di filosofia, LV, No.1-3, 1987, pp. 261-272.

Review of W. Hirst, ed.,The Making of Cognitive Science. Essays in Honor of George A. Miller (1988), and M. A. Boden, Computer Models of Mind. Computational Approaches in Theoretical Psychology (1988) (*) , AI & Society, Vol. 3, No. 4, 1989, pp. 365-369.